The number of molecules in 22 4cm3 of nitrogen gas at STP is a) 6 022×10 to the power 20 - Chemistry -

Question

The number of molecules in 22 4cm3 of nitrogen gas at STP is a) 6
022×10 to the power 20 b) 6 022×10 to the power 23 c)
22 4×10 to the power 20 d) 22 4×10 to the power 23

Jyotsana Pradeep Raisinghani · Accepted Answer

Dear student,
In 1 mole of gas
,
the no of L = 22 4
L = 22 4*1000 cm³ = 22400
cm³

now for 22 4
cm³
,
the no of moles
will be
= 22 4/22400 = 0 001
so the no of molecules will be 0 001*(6
022×1023)
= 6 022×1020 molecules
Answer is option
(a)
Regards

The number of molecules in 22.4cm3 of nitrogen gas at STP is a) 6.022×10 to the power 20 b) 6.022×10 to the power 23 c) 22.4×10 to the power 20 d) 22.4×10 to the power 23